On my debian 6 server, I used apt-get to install drush. However, it looks like it downloaded drush version 3. I want to upgrade to the latest stable release of drush (which I believe is drush 5). How can I do this?
The short answer is on the Drush project page under the heading Install/Update - Unix/OSX:
pear upgrade drush/drush
I first had to install PEAR, but that should not be an issue.
You can install/upgrade to the latest version using Composer.
Install/Update via Composer
Install Composer globally (if needed).
via composer installer:
curl -sS https://getcomposer.org/installer | php
php -r "readfile('https://getcomposer.org/installer');" | php
on OSX (via homebrew):
brew install composer
Make sure Composer's global bin directory is on the system PATH (recommended):
sed -i '1i export PATH="$HOME/.composer/vendor/bin:$PATH"' $HOME/.bashrc source $HOME/.bashrc
To install Drush 6.x (stable):
composer global require drush/drush:6.*
To install Drush 7.x (dev) which is required for Drupal 8:
composer global require drush/drush:dev-master
with specifying folder to install:
sudo COMPOSER_HOME=/var/lib/composer COMPOSER_BIN_DIR=/usr/local/bin COMPOSER_VENDOR_DIR=/var/lib/composer/vendor composer require drush/drush:dev-master
To update to a newer version (what you get depends on your specification in
composer global update
Alternate commands to install some other variant of Drush:
# Install a specific version of Drush, e.g. Drush 6.1.0 composer global require drush/drush:6.1.0 # Master branch as a git clone. Great for contributing back to Drush project. composer global require drush/drush:dev-master --prefer-source
If Drush cannot find an autoloaded class, run
composer self-update. Drush often
tracks composer changes closely, so you may have some problems if you are not
running a recent version.
Run 'drush up' in your terminal or command line interface. (Update manager has to be enabled) After checking all available updates for modules is will also check to self update.
It will end up with something like:
A newer version of drush, 7.x-5.4, is available. You are currently running drush version 5.0-rc3. The update process depends on how you installed drush. Some common update commands are:
pear upgrade drush,
drush dl drush --destination=[/path/to/drush]. To disable this check, put "$options['self-update'] = FALSE;" in your drushrc.php configuration file.
For more information on drush use 'drush help' or 'drush help COMMAND'.
If you are using PEAR, running "pear upgrade drush" on drush 4.5 did not work for me and just told me there were no updates. But pear upgrade did work and spit out a warning that the channel has changed.
If your version is old, you may need to run this first: "pear channel-update pear.drush.org"
[root@localhost ~]# pear upgrade drush No releases available for package "pear.php.net/drush" [root@localhost ~]# pear upgrade WARNING: channel "pear.drush.org" has updated its protocols, use "pear channel-update pear.drush.org" to update
drush globally (for all users), here is one-liner:
sudo install <(curl http://files.drush.org/drush.phar) /usr/local/bin/drush
On OS X/Unix, use this instead:
sudo wget -O /usr/local/bin/drush http://files.drush.org/drush.phar && sudo chmod +x /usr/local/bin/drush
Windows and other
Download release from https://github.com/drush-ops/drush/releases, then execute via
See: Install/Upgrade a global Drush at docs.drush.org